Definitions by Nick Cusa
hip
The state of being in-the-know, including, but not limited to, being stylish or fashionable. It is sometimes claimed to have replaced its predecessor, "hep," with the 1946 popular song, "(Get Your Kicks on) Route 66," first recorded by Nat Cole, and the Rolling Stones (and many others) after that. According to the songwriter, he changed "hep" to "hip" for the sake of a rhyme (see example).